CN107988702B - Preparation method of composite water-absorbing antibacterial material - Google Patents
Preparation method of composite water-absorbing antibacterial material Download PDFInfo
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- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
- D04H1/54—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by welding together the fibres, e.g. by partially melting or dissolving
- D04H1/541—Composite fibres, e.g. sheath-core, sea-island or side-by-side; Mixed fibres
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- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
- D04H1/407—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties containing absorbing substances, e.g. activated carbon
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- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
- D04H1/413—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties containing granules other than absorbent substances
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Abstract
The invention provides a preparation method of a composite water-absorbing antibacterial material, which comprises the following steps: step 1): taking antibacterial traditional Chinese medicinal materials as natural fiber materials, crushing and sieving, removing impurities in the fibers, and drying for later use; step 2): mixing thermoplastic composite fibers with the natural fiber material dried in the step 1), and performing opening treatment to form a fluffy net-shaped structure; step 3): preparing silver nitrate and sodium chloride reaction liquid; step 4): centrifuging the reaction solution, washing with alcohol, and drying to obtain nanometer composite antibacterial particles; step 5): adding the high-molecular water-absorbent resin particles, the nano composite antibacterial particles and the Buddha stone powder into the meshes of the reticular structure of the mixed fiber, and cooling after hot air penetrates through the reticular structure to prepare the composite water-absorbent antibacterial material. The composite water-absorbing antibacterial material has excellent water absorption, antibacterial property and sterilization property by fixing the high-molecular water-absorbing resin particles, the antibacterial particles and the like in meshes formed by interweaving mixed fibers.
Description
Technical Field
The invention belongs to the technical field of water-absorbing materials, and particularly relates to a preparation method of a composite water-absorbing antibacterial material.
Background
With the wide application of super absorbent materials in various fields such as personal hygiene products, industrial and agricultural production, civil engineering and construction, people have higher and higher requirements on the super absorbent materials in the aspects of water absorption, water retention, salt resistance, antibacterial property and the like, however, most of the existing super absorbent materials have the following problems: 1. the ionic high water absorption material has poor salt resistance; 2. the nonionic super absorbent material has high water absorption rate, better salt resistance and poor water absorption performance; 3. the water absorbing material lacks antibacterial and bactericidal properties and may produce pathogenic bacteria after long-term use; therefore, it is necessary to provide a water-absorbent material having excellent water-absorbing properties, water-retaining properties, salt resistance and antibacterial properties.
Disclosure of Invention
Based on the prior art, the invention aims to provide a preparation method of a composite water-absorbing antibacterial material, and the water-absorbing composite water-absorbing antibacterial material with excellent broad-spectrum antibacterial property and strong water absorption property is prepared.
In order to achieve the above purpose, the invention adopts the technical scheme that:
A preparation method of a composite water-absorbing antibacterial material comprises the following steps:
Step 1): using antibacterial traditional Chinese medicinal materials as natural fiber materials, pulverizing with a pulverizer, taking 40-60 mesh fiber materials, washing with distilled water at normal temperature for three times, washing with 80 vol.% ethanol for two times to remove impurities in the fiber, and drying at 60 deg.C;
Step 2): mixing thermoplastic composite fibers with the natural fiber materials dried in the step 1), opening the mixture, and carding the mixed fiber materials to form a fluffy reticular structure;
Step 3): dropwise adding silver nitrate and sodium chloride into a surfactant aqueous solution, stirring in the dark, and reacting to obtain a dispersion; adding tetraethyl orthosilicate dropwise, and stirring in a dark place to react to obtain reaction liquid;
Step 4): centrifuging the reaction solution prepared in the step 3), washing the obtained solid with alcohol after centrifugation, and drying in a dark place to obtain nano composite antibacterial particles;
Step 5): adding high-molecular water-absorbent resin particles, nano composite antibacterial particles and Buddha stone powder into meshes of the mixed fiber obtained in the step 2), penetrating the mesh with hot air, fusing and bonding the thermoplastic composite fibers and the natural fibers at cross contact points between the fibers, fusing and bonding the high-molecular water-absorbent resin particles, the nano composite antibacterial particles, the Buddha stone powder and the thermoplastic composite fibers at the contact points, cooling, forming fluffy non-woven fabric with the mesh structure, and fixing the high-molecular water-absorbent resin particles, the nano composite antibacterial particles and the Buddha stone powder in the meshes formed by interweaving the thermoplastic composite fibers and the natural fibers to obtain the composite water-absorbent antibacterial material.
Preferably, the antibacterial traditional Chinese medicinal materials are one or more of platycodon grandiflorum, tetranychus tetraphyllus, houttuynia cordata and wild chrysanthemum.
Preferably, the thermoplastic composite fiber is polyethylene/polypropylene bi-component thermoplastic composite fiber or polyethylene/polyester bi-component thermoplastic composite fiber.
Preferably, the molar ratio of silver nitrate to sodium chloride is (0.5-2.0): 1.
Preferably, the nano composite antibiotic particles have a particle size of 100 to 800nm, an AgCl core having a particle size of 100 to 700nm and SiO having a particle size of 10 to 100nm 2And (4) shell layer.
Preferably, the particle diameter of the high molecular water absorbent resin particles is 200-1000 nm.
Preferably, the particle size of the pumice powder is 100-200 nm.
The reaction mechanism of the preparation process of the composite water-absorbing antibacterial material is as follows:
In the preparation process of the composite water-absorbing antibacterial material, the thermoplastic composite fibers and the natural traditional Chinese medicine fibers with antibacterial performance are mixed and then are subjected to opening treatment to obtain a net structure, then the high-molecular water-absorbing resin particles, the nano-composite antibacterial particles and the Buddha stone powder are added into the net structure, the high-molecular water-absorbing resin particles, the nano-composite antibacterial particles and the Buddha stone powder can be fixedly adhered to meshes formed by interweaving the thermoplastic composite fibers and the natural fibers by utilizing the thermoplasticity of the thermoplastic composite fibers and cooling after hot air penetration, and the composite water-absorbing antibacterial material has long-acting water-absorbing and antibacterial effects. The antibacterial traditional Chinese medicinal materials are selected from one or more of platycodon grandiflorum, radix codonopsis lanceolatae, houttuynia cordata and wild chrysanthemum, and the platycodon grandiflorum, the radix codonopsis lanceolatae, the houttuynia cordata and the wild chrysanthemum have excellent anti-staphylococcus aureus functions. The nano composite antibacterial particles pass through porous SiO in the structure 2The shell layer can stably and effectively control Ag +Slowly releases, overcomes the defects of easy light reduction and easy color change of AgCl, realizes durable and stable antibacterial action, and has wide antibacterial spectrum. The addition of the pumice powder can adsorb and eliminate toxic heavy metal ions, reduce nitrogen ammonia and hydrogen sulfide, regulate the pH value of a water body and assist in antibiosis. In addition, the high-molecular water-absorbent resin particles, the nano-composite antibacterial particles and the Buddha stone powder have good dispersibility in the mixed fibers of the thermoplastic composite fibers and the natural fibers, so that the high-molecular water-absorbent resin particles absorb water uniformly without forming local accumulation, and the composite water-absorbent material can keep uniform water absorption performance.
In summary, compared with the prior art, the invention has the following beneficial effects:
The preparation method of the composite water-absorbing antibacterial material is simple in process, and the prepared composite water-absorbing antibacterial material has excellent broad-spectrum antibacterial property and strong water-absorbing performance and can keep uniform water absorption.
Detailed Description
The present invention will be described in further detail with reference to specific examples.
Example 1
A preparation method of a composite water-absorbing antibacterial material comprises the following steps:
Step 1): taking platycodon grandiflorum as a natural fiber material, crushing the platycodon grandiflorum by a crusher, taking the fiber material with a 40-mesh sieve, washing the fiber material with distilled water for three times at normal temperature, washing the fiber material with ethanol with the volume concentration of 80% for two times to remove impurities in the fiber, and drying the fiber material for later use at the temperature of 60 ℃;
Step 2): mixing polyethylene/polypropylene bi-component thermoplastic composite fibers with the natural fiber materials dried in the step 1), opening the mixture after mixing, and then carding the mixed fiber materials to form a fluffy net-shaped structure;
Step 3): dropwise adding silver nitrate and sodium chloride into a surfactant aqueous solution, stirring in the dark, and reacting to obtain a dispersion; adding tetraethyl orthosilicate dropwise, and stirring in a dark place to react to obtain reaction liquid;
Step 4): centrifuging the reaction solution prepared in the step 3), washing the obtained solid with alcohol after centrifugation, and drying in a dark place to obtain nano composite antibacterial particles;
Step 5): adding high-molecular water-absorbent resin particles, nano composite antibacterial particles and Buddha stone powder into meshes of the mixed fiber obtained in the step 2), penetrating the mesh with hot air, fusing and bonding the thermoplastic composite fibers and the natural fibers at cross contact points between the fibers, fusing and bonding the high-molecular water-absorbent resin particles, the nano composite antibacterial particles, the Buddha stone powder and the thermoplastic composite fibers at the contact points, cooling, forming fluffy non-woven fabric with the mesh structure, and fixing the high-molecular water-absorbent resin particles, the nano composite antibacterial particles and the Buddha stone powder in the meshes formed by interweaving the thermoplastic composite fibers and the natural fibers to obtain the composite water-absorbent antibacterial material.
Example 2
A preparation method of a composite water-absorbing antibacterial material comprises the following steps:
Step 1): taking four-leaf ginseng as a natural fiber material, crushing the four-leaf ginseng by a crusher, taking the 50-mesh-sieve fiber material, washing the fiber material with distilled water for three times at normal temperature, washing the fiber material with ethanol with the volume concentration of 80% for two times to remove impurities in the fiber, and drying the fiber material for later use at the temperature of 60 ℃;
Step 2): mixing polyethylene/polyester bi-component thermoplastic composite fibers with the natural fiber materials dried in the step 1), opening the mixture after mixing, and then carding the mixed fiber materials to form a fluffy net-shaped structure;
Step 3): dropwise adding silver nitrate and sodium chloride into a surfactant aqueous solution, stirring in the dark, and reacting to obtain a dispersion; adding tetraethyl orthosilicate dropwise, and stirring in a dark place to react to obtain reaction liquid;
Step 4): centrifuging the reaction solution prepared in the step 3), washing the obtained solid with alcohol after centrifugation, and drying in a dark place to obtain nano composite antibacterial particles;
Step 5): adding high-molecular water-absorbent resin particles, nano composite antibacterial particles and Buddha stone powder into meshes of the mixed fiber obtained in the step 2), penetrating the mesh with hot air, fusing and bonding the thermoplastic composite fibers and the natural fibers at cross contact points between the fibers, fusing and bonding the high-molecular water-absorbent resin particles, the nano composite antibacterial particles, the Buddha stone powder and the thermoplastic composite fibers at the contact points, cooling, forming fluffy non-woven fabric with the mesh structure, and fixing the high-molecular water-absorbent resin particles, the nano composite antibacterial particles and the Buddha stone powder in the meshes formed by interweaving the thermoplastic composite fibers and the natural fibers to obtain the composite water-absorbent antibacterial material.
Example 3
A preparation method of a composite water-absorbing antibacterial material comprises the following steps:
Step 1): pulverizing herba Houttuyniae as natural fiber material with a pulverizer, taking 60 mesh fiber material, washing with distilled water at room temperature for three times, washing with 80 vol% ethanol for two times to remove impurities in fiber, and oven drying at 60 deg.C;
Step 2): mixing polyethylene/polypropylene bi-component thermoplastic composite fibers with the natural fiber materials dried in the step 1), opening the mixture after mixing, and then carding the mixed fiber materials to form a fluffy net-shaped structure;
Step 3): dropwise adding silver nitrate and sodium chloride into a surfactant aqueous solution, stirring in the dark, and reacting to obtain a dispersion; adding tetraethyl orthosilicate dropwise, and stirring in a dark place to react to obtain reaction liquid;
Step 4): centrifuging the reaction solution prepared in the step 3), washing the obtained solid with alcohol after centrifugation, and drying in a dark place to obtain nano composite antibacterial particles;
Step 5): adding high-molecular water-absorbent resin particles, nano composite antibacterial particles and Buddha stone powder into meshes of the mixed fiber obtained in the step 2), penetrating the mesh with hot air, fusing and bonding the thermoplastic composite fibers and the natural fibers at cross contact points between the fibers, fusing and bonding the high-molecular water-absorbent resin particles, the nano composite antibacterial particles, the Buddha stone powder and the thermoplastic composite fibers at the contact points, cooling, forming fluffy non-woven fabric with the mesh structure, and fixing the high-molecular water-absorbent resin particles, the nano composite antibacterial particles and the Buddha stone powder in the meshes formed by interweaving the thermoplastic composite fibers and the natural fibers to obtain the composite water-absorbent antibacterial material.
Example 4
A preparation method of a composite water-absorbing antibacterial material comprises the following steps:
Step 1): the wild chrysanthemum is used as a natural fiber material, the wild chrysanthemum is crushed by a crusher, the fiber material with a 50-mesh sieve is taken, the fiber material is washed three times by distilled water at normal temperature, and then washed twice by ethanol with the volume concentration of 80% so as to remove impurities in the fiber, and the fiber material is dried for standby at the temperature of 60 ℃;
Step 2): mixing polyethylene/polyester bi-component thermoplastic composite fibers with the natural fiber materials dried in the step 1), opening the mixture after mixing, and then carding the mixed fiber materials to form a fluffy net-shaped structure;
Step 3): dropwise adding silver nitrate and sodium chloride into a surfactant aqueous solution, stirring in the dark, and reacting to obtain a dispersion; adding tetraethyl orthosilicate dropwise, and stirring in a dark place to react to obtain reaction liquid;
Step 4): centrifuging the reaction solution prepared in the step 3), washing the obtained solid with alcohol after centrifugation, and drying in a dark place to obtain nano composite antibacterial particles;
Step 5): adding high-molecular water-absorbent resin particles, nano composite antibacterial particles and Buddha stone powder into meshes of the mixed fiber obtained in the step 2), penetrating the mesh with hot air, fusing and bonding the thermoplastic composite fibers and the natural fibers at cross contact points between the fibers, fusing and bonding the high-molecular water-absorbent resin particles, the nano composite antibacterial particles, the Buddha stone powder and the thermoplastic composite fibers at the contact points, cooling, forming fluffy non-woven fabric with the mesh structure, and fixing the high-molecular water-absorbent resin particles, the nano composite antibacterial particles and the Buddha stone powder in the meshes formed by interweaving the thermoplastic composite fibers and the natural fibers to obtain the composite water-absorbent antibacterial material.
Comparative example 1
A preparation method of a composite water-absorbing antibacterial material comprises the following steps:
Step 1): opening and opening polyethylene/polyester bi-component thermoplastic composite fibers, and then carding fiber materials to form a fluffy net-shaped structure;
Step 3): dropwise adding silver nitrate and sodium chloride into a surfactant aqueous solution, stirring in the dark, and reacting to obtain a dispersion; adding tetraethyl orthosilicate dropwise, and stirring in a dark place to react to obtain reaction liquid;
Step 4): centrifuging the reaction solution prepared in the step 3), washing the obtained solid with alcohol after centrifugation, and drying in a dark place to obtain nano composite antibacterial particles;
Step 5): adding high-molecular water-absorbent resin particles, nano composite antibacterial particles and Buddha stone powder into the meshes of the mesh structure of the fibers obtained in the step 2), penetrating the mesh structure by hot air, fusing and bonding the thermoplastic composite fibers and the natural fibers at the cross contact points between the fibers, fusing and bonding the high-molecular water-absorbent resin particles, the nano composite antibacterial particles, the Buddha stone powder and the thermoplastic composite fibers at the contact points, cooling to form fluffy non-woven fabric with the mesh structure, and fixing the high-molecular water-absorbent resin particles, the nano composite antibacterial particles and the Buddha stone powder in the meshes formed by interweaving the thermoplastic composite fibers to obtain the composite water-absorbent antibacterial material.
Comparative example 2
A preparation method of a composite water-absorbing antibacterial material comprises the following steps:
Step 1): the wild chrysanthemum is used as a natural fiber material, the wild chrysanthemum is crushed by a crusher, the fiber material with a 50-mesh sieve is taken, the fiber material is washed three times by distilled water at normal temperature, and then washed twice by ethanol with the volume concentration of 80% so as to remove impurities in the fiber, and the fiber material is dried for standby at the temperature of 60 ℃;
Step 2): mixing polyethylene/polyester bi-component thermoplastic composite fibers with the natural fiber materials dried in the step 1), opening the mixture after mixing, and then carding the mixed fiber materials to form a fluffy net-shaped structure;
Step 5): adding the high-molecular water-absorbent resin particles and the Buddha stone powder into meshes of the mixed fiber mesh structure obtained in the step 2), penetrating the mesh structure with hot air, fusing and bonding the thermoplastic composite fiber and the natural fiber at cross contact points between the fibers, fusing and bonding the high-molecular water-absorbent resin particles, the Buddha stone powder and the thermoplastic composite fiber at the contact points, cooling, forming fluffy non-woven fabric with the mesh structure, and fixing the high-molecular water-absorbent resin particles and the Buddha stone powder in meshes formed by interweaving the thermoplastic composite fiber and the natural fiber to obtain the composite water-absorbent antibacterial material.
Comparative example 3
A preparation method of a composite water-absorbing antibacterial material comprises the following steps:
Step 1): the wild chrysanthemum is used as a natural fiber material, the wild chrysanthemum is crushed by a crusher, the fiber material with a 50-mesh sieve is taken, the fiber material is washed three times by distilled water at normal temperature, and then washed twice by ethanol with the volume concentration of 80% so as to remove impurities in the fiber, and the fiber material is dried for standby at the temperature of 60 ℃;
Step 2): mixing polyethylene/polyester bi-component thermoplastic composite fibers with the natural fiber materials dried in the step 1), opening the mixture after mixing, and then carding the mixed fiber materials to form a fluffy net-shaped structure;
Step 3): dropwise adding silver nitrate and sodium chloride into a surfactant aqueous solution, stirring in the dark, and reacting to obtain a dispersion; adding tetraethyl orthosilicate dropwise, and stirring in a dark place to react to obtain reaction liquid;
Step 4): centrifuging the reaction solution prepared in the step 3), washing the obtained solid with alcohol after centrifugation, and drying in a dark place to obtain nano composite antibacterial particles;
Step 5): adding the nano composite antibacterial particles and the Buddha stone powder into meshes of the mixed fiber mesh structure obtained in the step 2), penetrating the mesh structure with hot air, fusing and bonding the thermoplastic composite fibers and the natural fibers at cross contact points between the fibers, fusing and bonding the nano composite antibacterial particles, the Buddha stone powder and the thermoplastic composite fibers at the contact points, cooling, forming fluffy non-woven fabric with the mesh structure, and fixing the nano composite antibacterial particles and the Buddha stone powder in meshes formed by interweaving the thermoplastic composite fibers and the natural fibers to obtain the composite water-absorbing antibacterial material.
the water absorption and antibacterial properties of the composite water-absorbing antibacterial materials prepared in the above examples 1 to 4 and comparative examples 1 to 3 were tested, wherein the antibacterial properties were determined by antibacterial experiments, specifically, 10g of the composite water-absorbing antibacterial materials prepared in the above examples and comparative examples were respectively taken, 1m L E.coli solution and 1m L Staphylococcus aureus solution were respectively added thereto, and the mixture was left to stand for 30min, to test the sterilization rate of the composite water-absorbing antibacterial materials, and the test results are shown in the following tables 1 and 2.
Table 1 water absorption test results of the composite water-absorbent antibacterial material
| Water absorption rate | Sterilizing rate of Escherichia coli | Ratio to Staphylococcus aureus | |
| Example 1 | 320g/g | 100％ | 100％ |
| Example 2 | 315g/g | 100％ | 100％ |
| Example 3 | 323g/g | 100％ | 100％ |
| Example 4 | 322g/g | 100％ | 100％ |
| Comparative example 1 | 300g/g | 90％ | 80％ |
| Comparative example 2 | 322g/g | 20％ | 60％ |
| Comparative example 3 | 40g/g | 80％ | 90％ |
From the test results, the composite water-absorbing antibacterial materials prepared in the embodiments 1 to 4 of the present invention have strong water absorption and bactericidal properties, and have hundred percent inhibition rate on escherichia coli and staphylococcus aureus. The composite water-absorbing antibacterial material of the comparative example 1 has lower sterilization rate to escherichia coli and staphylococcus aureus when the traditional Chinese medicine antibacterial fiber is not added in the mixed fiber; the composite water-absorbing antibacterial material of comparative example 2 has significantly lower bactericidal rate on escherichia coli and staphylococcus aureus when the nano composite antibacterial particles are lacked; the composite water-absorbent antibacterial material of comparative example 3, in the absence of the water-absorbent polymer particles, had a significantly reduced water absorption. In conclusion, the composite water-absorbing antibacterial material provided by the invention is proved to have excellent water absorption, antibacterial and bactericidal properties by fixing and adsorbing the high-molecular water-absorbing resin particles, the nano-composite antibacterial particles and the Buddha stone powder in meshes formed by interweaving the thermoplastic composite fibers and the natural fibers.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (7)
1. A preparation method of a composite water-absorbing antibacterial material is characterized by comprising the following steps:
Step 1): using antibacterial traditional Chinese medicinal materials as natural fiber materials, pulverizing with a pulverizer, taking 40-60 mesh fiber materials, washing with distilled water at normal temperature for three times, washing with 80 vol.% ethanol for two times to remove impurities in the fiber, and drying at 60 deg.C;
Step 2): mixing thermoplastic composite fibers with the natural fiber materials dried in the step 1), opening the mixture, and carding the mixed fiber materials to form a fluffy reticular structure;
Step 3): dropwise adding silver nitrate and sodium chloride into a surfactant aqueous solution, stirring in the dark, and reacting to obtain a dispersion; adding tetraethyl orthosilicate dropwise, and stirring in a dark place to react to obtain reaction liquid;
Step 4): centrifuging the reaction solution prepared in the step 3), washing the obtained solid with alcohol after centrifugation, and drying in a dark place to obtain nano composite antibacterial particles;
Step 5): adding high-molecular water-absorbent resin particles, nano composite antibacterial particles and Buddha stone powder into meshes of the mixed fiber obtained in the step 2), penetrating the mesh with hot air, fusing and bonding the thermoplastic composite fibers and the natural fibers at cross contact points between the fibers, fusing and bonding the high-molecular water-absorbent resin particles, the nano composite antibacterial particles, the Buddha stone powder and the thermoplastic composite fibers at the contact points, cooling, forming fluffy non-woven fabric with the mesh structure, and fixing the high-molecular water-absorbent resin particles, the nano composite antibacterial particles and the Buddha stone powder in the meshes formed by interweaving the thermoplastic composite fibers and the natural fibers to obtain the composite water-absorbent antibacterial material.
2. The method for preparing the composite water-absorbing antibacterial material according to claim 1, wherein the antibacterial traditional Chinese medicinal material is one or more of platycodon grandiflorum, tetranychus tetraphyllus, houttuynia cordata, and wild chrysanthemum.
3. The method for preparing the composite water-absorbing antibacterial material according to claim 1, wherein the thermoplastic composite fiber is a polyethylene/polypropylene two-component thermoplastic composite fiber or a polyethylene/polyester two-component thermoplastic composite fiber.
4. The preparation method of the composite water-absorbing antibacterial material according to claim 1, wherein the molar ratio of the silver nitrate to the sodium chloride is (0.5-2.0): 1.
5. The method for preparing the composite water-absorbing antibacterial material according to claim 1, wherein the nano-composite antibacterial particles have a particle size of 100 to 800nm, an AgCl core having a particle size of 100 to 700nm, and SiO having a particle size of 10 to 100nm 2And (4) shell layer.
6. The method for preparing the composite water-absorbing antibacterial material according to claim 1, wherein the particle size of the polymeric water-absorbing resin particles is 200-1000 nm.
7. The method for preparing the composite water-absorbing antibacterial material according to claim 1, wherein the particle size of the fluorite powder is 100-200 nm.
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| CN103696131A (en) * | 2013-11-25 | 2014-04-02 | 芜湖跃飞新型吸音材料股份有限公司 | Flame-retardant sound-absorbing cotton and preparation method thereof |
| CN103696129A (en) * | 2013-11-25 | 2014-04-02 | 芜湖跃飞新型吸音材料股份有限公司 | Flame-retardant antibacterial sound-absorbing cotton and preparation method thereof |
| CN103753875A (en) * | 2013-11-27 | 2014-04-30 | 芜湖跃飞新型吸音材料股份有限公司 | Chinese herbal medicine modified isotatic polypropylene non-woven fabric and preparation method thereof |
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